style(dart): Format with dartfmt v0.2.0

Format all pure Dart code with package:dart_style v0.2.0

Command:
```
find -type f -name "*.dart" | xargs dartformat -w
```

modules/benchmarks_external/src/naive_infinite_scroll/app.dart

@@ -5,7 +5,9 @@ import 'dart:html';
 import 'package:angular/angular.dart';
 import 'package:angular2/src/test_lib/benchmark_util.dart';
 
-@Component(selector: 'scroll-app', template: '''
+@Component(
+    selector: 'scroll-app',
+    template: '''
     <div>
         <div style="display: flex">
           <scroll-area scroll-top="scrollTop"></scroll-area>

modules/benchmarks_external/src/naive_infinite_scroll/cells.dart

@@ -3,25 +3,34 @@ library cells;
 import 'package:angular/angular.dart';
 import 'common.dart';
 
-@Component(selector: 'company-name', template: '''
+@Component(
+    selector: 'company-name',
+    template: '''
     <div style="width: {{width}}">{{company.name}}</div>
-    ''', map: const {'company': '=>company', 'cell-width': '=>width',})
+    ''',
+    map: const {'company': '=>company', 'cell-width': '=>width',})
 class CompanyNameComponent {
   String width;
   Company company;
 }
 
-@Component(selector: 'opportunity-name', template: '''
+@Component(
+    selector: 'opportunity-name',
+    template: '''
     <div style="width: {{width}}">{{opportunity.name}}</div>
-    ''', map: const {'opportunity': '=>opportunity', 'cell-width': '=>width',})
+    ''',
+    map: const {'opportunity': '=>opportunity', 'cell-width': '=>width',})
 class OpportunityNameComponent {
   String width;
   Opportunity opportunity;
 }
 
-@Component(selector: 'offering-name', template: '''
+@Component(
+    selector: 'offering-name',
+    template: '''
     <div style="width: {{width}}">{{offering.name}}</div>
-    ''', map: const {'offering': '=>offering', 'cell-width': '=>width',})
+    ''',
+    map: const {'offering': '=>offering', 'cell-width': '=>width',})
 class OfferingNameComponent {
   String width;
   Offering offering;
@@ -38,7 +47,9 @@ class Stage {
       : '';
 }
 
-@Component(selector: 'stage-buttons', template: '''
+@Component(
+    selector: 'stage-buttons',
+    template: '''
     <div style="width: {{width}}">
         <button ng-repeat="stage in stages"
                 ng-disabled="stage.isDisabled"
@@ -47,7 +58,8 @@ class Stage {
           {{stage.name}}
         </button>
     </div>
-    ''', map: const {'offering': '=>offering', 'cell-width': '=>width',})
+    ''',
+    map: const {'offering': '=>offering', 'cell-width': '=>width',})
 class StageButtonsComponent {
   Offering _offering;
   List<Stage> stages;
@@ -83,13 +95,16 @@ class StageButtonsComponent {
   }
 }
 
-@Component(selector: 'account-cell', template: '''
+@Component(
+    selector: 'account-cell',
+    template: '''
     <div style="width: {{width}}">
       <a href="/account/{{account.accountId}}">
         {{account.accountId}}
       </a>
     </div>
-    ''', map: const {'account': '=>account', 'cell-width': '=>width',})
+    ''',
+    map: const {'account': '=>account', 'cell-width': '=>width',})
 class AccountCellComponent {
   Account account;
   String width;

modules/benchmarks_external/src/naive_infinite_scroll/common.dart

@@ -40,7 +40,8 @@ const AAT_STATUS_LIST = const ['Active', 'Passive', 'Abandoned'];
 
 // Imitate Streamy entities.
 
-class RawEntity extends Object with MapMixin<String, dynamic>
+class RawEntity extends Object
+    with MapMixin<String, dynamic>
     implements ObservableMap<String, dynamic> {
   ObservableMap _data = new ObservableMap();
 
@@ -113,10 +114,12 @@ class RawEntity extends Object with MapMixin<String, dynamic>
   void notifyChange(ChangeRecord record) {
     _data.notifyChange(record);
   }
+
   @override
   void observed() {
     _data.observed();
   }
+
   @override
   void unobserved() {
     _data.observed();

modules/benchmarks_external/src/naive_infinite_scroll/random_data.dart

@@ -62,12 +62,8 @@ DateTime randomDate(int seed, {DateTime minDate}) {
 }
 
 String randomString(int seed) {
-  return new String.fromCharCodes(new List.generate(const [
-    5,
-    7,
-    9,
-    11,
-    13
-  ][seed % 5], (i) =>
-      'a'.codeUnitAt(0) + const [0, 1, 2, 3, 4, 5, 6, 7, 8][seed % 9] + i));
+  return new String.fromCharCodes(new List.generate(
+      const [5, 7, 9, 11, 13][seed % 5],
+      (i) =>
+          'a'.codeUnitAt(0) + const [0, 1, 2, 3, 4, 5, 6, 7, 8][seed % 9] + i));
 }

modules/benchmarks_external/src/naive_infinite_scroll/scroll_item.dart

@@ -24,6 +24,7 @@ class ScrollItemComponent implements ShadowRootAware {
       'justify-content': 'space-between',
     });
   }
+
   get companyNameWidth => '${COMPANY_NAME_WIDTH}px';
   get opportunityNameWidth => '${OPPORTUNITY_NAME_WIDTH}px';
   get offeringNameWidth => '${OFFERING_NAME_WIDTH}px';